[Tutor] Tuple - Immutable ?

[Sudip Bhattacharya]

That makes perfect sense. What happened was that the old tuple got replaced
with a new tuple (old + new items) and NOT changed cause tuple is
immutable.

Thanks HTH.

On Thu, Mar 8, 2012 at 4:53 PM, col speed <ajarncolin at gmail.com> wrote:

> On 8 March 2012 18:11, Sudip Bhattacharya <sudipb at sudipb.com> wrote:
> >>>> s=(1,2,3)
> >>>> s=s+(4,5,6)
> >>>>s
> > (1,2,3,4,5,6)
> >
> > The tuple has changed.
> >
> > I thought I read that tuples are sequences (like lists), but they are
> > immutable - They can't be changed once created. Could someone explain
> please
> > ?
>
> I'm just a noob, but as nobody else has replied yet......
> As far as I *think* I know:
> s=s+(4,5,6) creates a new tuple, it doesn't change it.
> Tuples are immutable as in you can't add or append and stuff.
> Also:
>
> >>> s[0] = 8
> Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
> TypeError: 'tuple' object does not support item assignment
> Nor does it have attribute "reverse" or anything like that.
>
> HTH
> Col
>



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Thanks and regards,
Sudip Bhattacharya

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